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221090

Sigma-Aldrich

Mercury(II) iodide

ACS reagent, ≥99.0%

Synonym(s):

Mercuric iodide red

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About This Item

Linear Formula:
HgI2
CAS Number:
7774-29-0
Molecular Weight:
454.40
EC Number:
231-873-8
MDL number:
MFCD00011044
UNSPSC Code:
12352302
PubChem Substance ID:
329752248
NACRES:
NA.21
Assay:
≥99.0%
grade:
ACS reagent
form:
powder
solubility:
potassium iodide solution: passes test
Pricing and availability is not currently available.

grade

ACS reagent

Quality Level

200

Assay

≥99.0%

form

powder

reaction suitability

reagent type: catalyst
core: mercury

impurities

≤0.05% soluble Hg salts

bp

354 °C (lit.)

mp

259 °C (lit.)

solubility

potassium iodide solution: passes test

cation traces

Hg+: ≤0.1%

SMILES string

I[Hg]I

InChI

1S/Hg.2HI/h;2*1H/q+2;;/p-2

InChI key

YFDLHELOZYVNJE-UHFFFAOYSA-L

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General description

Red mercuric oxide possesses the ability to detect high energy radiation (X- and γ-rays) and is used in nuclear radiation detectors.[1][2]

Application

Mercury(II) iodide may be used in the preparation of the following:
  • mercury(II) acetate[3]
  • di­iodo­bis(1-methyl-1,3-imidazolium-2-thiol­ato-S)­mercury(II)[4]
  • [Hg2(L)(I)4] and [(L′)Hg(μ-I)2HgI2]n (L = N, N′-bis(phenyl(pyridin-2-yl)methylene)propane-1,2-diamine, L′ = N-(phenyl(pyridin-2-yl)methylene)propane-1,2-diamine)[5]

Signal Word

Danger

Hazard Classifications

Acute Tox. 1 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

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Certificates of Analysis (COA)

Lot/Batch Number
STBL1944
STBK8897
STBK6039
STBJ9459
STBJ2628

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Mercuric iodide for room temperature radiation detectors. Synthesis, purification, crystal growth and defect formation.
Piechotka M.
Materials Science & Engineering. R, Reports : A Review Journal, 18(1), 1-98 (1997)
Preliminary results on mercuric iodide nuclear radiation detectors.
Ponpon JP, et al.
Nuclear Instruments and Methods in Physics Research, 119, 197-198 (1974)
Syntheses, Characterization, and Crystal Structures of a Dinuclear Complex and Coordination Polymer of Mercury (II) with Schiff Base Ligands containing N3 and N4 Donors.
Abedi M, et al.
Zeitschrift fur Anorganische und Allgemeine Chemie, 640(11), 2193-2197 (2014)
Eagleson M.
Concise Encyclopedia Chemistry, 637-637 (1994)
Diiodobis (1-methyl-1, 3-imidazolium-2-thiolato-S) mercury (II).
Pavlovic G, et al.
Acta Crystallographica Section C, Crystal Structure Communications, 56(7), 801-803 (2000)
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